.forum {
    width: 100%;
    height: 100%;
    font-family: '黑体';
}
.forum1 {
    width: 80%;
}
.forum2 {
    width: 100%;
    height: 80px;
    background-color: #F3F3F5;
    margin-top: 15px;
    display: flex;
    align-items: center;
    padding-left: 20px;
    padding-right: 20px;
    cursor: pointer;
}